12. MAINTENANCE, TROUBLESHOOTING
12-2
12.2 How to Replace the Fuse
The fuse (3A, Type: FGBO-A 125V 3A PBF, Code No.: 000-155-850-10) in the fuse
holder on the power cable protects the display unit from high electric current and
equipment fault. If you cannot turn on the power, check the fuse to see if it has blown.
If the fuse has blown, find the reason before you replace the fuse. If the fuse blows
again after the replacement, contact your dealer for advice.
12.3 Troubleshooting
This section provides simple troubleshooting procedures which the user can follow to
restore normal operation. If you cannot restore normal operation, do not check inside
the unit. Have a qualified technician check the equipment.
Use the proper fuse.
Use of a wrong fuse can result in fire and dam-
age the equipment.
Problem Remedy
General Troubleshooting
You cannot turn on
the power.
• Check for blown fuse.
• Check that the power connector is tightly fastened.
• Check for corrosion on the power cable connector.
• Check for damaged power cable.
• Check the battery voltage is 10.8 to 31.2 V.
No picture appears
even though the
power is on.
Press the POWER/BRILL key and rotate the RotoKey
TM
clock-
wise to raise the brilliance.
There is no response
when a key is
pressed.
Turn off and on the power. If you do not get a response, the key
is damaged. Contact your dealer for instructions.
Plotter Troubleshooting
Position is not fixed
within 90 seconds.
• Check that the antenna connector is tightly fastened.
• Check the number of satellites received, on the GPS Status
Display.
• Check if [POSITION&SOG/COG] in the [SELECT INPUT
DEVICE] menu in the [INTERFACE] menu is set to [Internal
GPS]. Execute [RESTART GPS] in the [INTERNAL GPS
SETUP] menu in the [SYSTEM] menu.
Bearing is wrong. Check the magnetic variation setting at [COMPASS SETUP] in
the [SYSTEM] menu.
The track of your
boat is not plotted.
Check that the track is turned on. Operate the [Track] soft con-
trol to turn track on.
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